Updated January 14, 2024 Many cats have chronic problems with conjunctivitis (inflammation of the eye membranes). Often, the problem comes and goes. The symptoms of feline conjunctivitis in cats are red, swollen, watery, crusty, or goopy eyes. There are many ways to prevent and treat this painful condition. Causes of Conjunctivitis in Cats Causes include viral and/or bacterial infection, congenital defects (small or absent tear ducts), facial conformation (Persian features), and scarring from previous infections. Unlike humans, allergies are rarely involved--cats don't get "hay fever." The most common cause of ...